I’d like to know if I can generate forms dynamically using a select, depending of its value, here’s the code to explain.

It is possible to generate between 1 and 5 RelationType form depending of the value of nombreLiens ?

<?php

namespace AppForm;

use SymfonyComponentFormAbstractType;
use SymfonyComponentFormFormBuilderInterface;
use SymfonyComponentOptionsResolverOptionsResolver;
use SymfonyBridgeDoctrineFormTypeEntityType;
use DoctrineORMEntityRepository;
use SymfonyComponentFormCallbackTransformer;
use DoctrineORMEntityManagerInterface;
use SymfonyComponentFormExtensionCoreTypeCollectionType;
use SymfonyComponentFormExtensionCoreTypeTextareaType;
use SymfonyComponentFormExtensionCoreTypeHiddenType;
use SymfonyComponentFormExtensionCoreTypeChoiceType;

class RelationCollectionType extends AbstractType
{
    public function buildForm(FormBuilderInterface $builder, array $options) {
        $builder->add('relations', CollectionType::class, [
            'entry_type' => RelationType::class,
            'allow_add' =>true,
            'by_reference' => false,
            'allow_delete' => true
        ])
        ->add('identite', HiddenType::class)
        ->add('entite', HiddenType::class)
        ->add('nombreLiens', ChoiceType::class, [
            'choices' => [
                '1' => 1,
                '2' => 2,
                '3' => 3,
                '4' => 4,
                '5' => 5,
            ],
            'mapped' => false,
            'label' => 'Nombre de liens',
        ]);
    }
}